Brenz



PATENTED JAN. 5, 1904.

P. PRISM.- MACHINE FOR MAKING PASTEBOARD.

APPLICATION FILED SEPT. a, 1903.

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TH: Norms PEYERS cn mom-urns wsuma No. 748,983. PATENTED' JAN. 5, 1904,

P. PRIEM. MACHINE FOR MAKING PASTE-BOARD.

APPLIOATH JN FILED SEPT. 8, 1903.

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UNITED STATES Patented January 5, 1904.

PATENT OFFICE.

THE FIRM OF J. M. VOITH MASCHINENFABRIK, O BRENZ, WIIRTEMBERG, GERMANY.

F HEIDEN II EIM-ON-THE- MACHINE FOR MAKING PASTEBOARD.

SPECIFICATION forming part of Letters Application filed September To all whom it may concern:

Be it known that I, PAUL PRIEM, a citizen of the Empire of Germany, residing at Balmhofstrasse 5,Heidenheim-on-the-Brenz, in the Kingdom of Wiirtemberg and Empire of Ger- I many, have inventedcertain new and useful Improvements in Machines for Making Pasteboard, of which the following is a specification.

In the well-known machines for making pasteboard, in which a plurality of screencylinders are used one behindthe other, a pasteboard'of uniform thickness is obtained when all the different cylinders are used.

When by the same machine thinner pasteboard has to be made, the fibrous layers on the different cylinders have not to be taken ofi by the felt; bnt,according to the thickness required for the pasteboard, one or more screen-cylinders must be cut out-that is to say, placed out of action. fore accomplished either by permitting these cylinders to run in empty tanks or by removing them entirely from their vats before the machine was started. These methods, however, were objectionable, as they were connected with a considerable loss of time. The object of this invention is to furnish a means for cutting out any desired number of screen-cylinders, so that pasteboard of any desired thickness can be made in the simplest possible manner. This is accomplished by removing some of the screen -cylinders, by means of suitable gearings, away from the felt. As these cylinders are usually located vertically below the course of the paper, the removing of the cylinders is preferably accomplished by a lowering of the same either in their vats or together with their vats. This arrangement furnishes the additional advantage that single vats can be withdrawn with the cylinders in lateral direction without interrupting the operation of the .pasteboardmachine. This is the more advantageous, as in this manner any repairs or the introduction of reserve parts and the cleaning of the screen-cylinders which is necessary from time to time by means of steam or hot water for This was hereto-- Patent No. 748,983, dated January 5, 19,04.

s, 1903. $erial No. 172.216. on) model.)

removing the adhering gum and fibers from the screens and the cleaning of the vats can be accomplished without interrupting the working of the machine.

In the accompanying drawings, Figure 1 represents a side elevation of a pasteboardmachine withone of the screen-cylinders and its vat c'ut out-that is to say, lowered below the fiber-carrying felt. Fig. 2 is a side elevation of one of the cut-out or lowered screen- :cylin'ders, drawn on a larger scale; and Fig. 13 is a plan View of Fig. 2. Similar characters of reference indicate cor- ;responding parts.

In the machine for making pasteboard shown in the drawings any one of the vats V is lowered or raised simultaneously with its screen-cylinder by means of four screw-spindles 1, which are operated simultaneously by one or two cranks 5, the shafts of which are supported on the upright standards of the pasteboard machine. The transmission of motion from the cran k to the spindle and from one spindle to the other spindle of the same vat is accomplished by means of a wormgear 2, beveled gears 3, and cross-shafts 4. The vatVis thereby lowered simultaneously with the screen-cylinder supported in the same. One of the screen-cylinders is shown in Fig. 1 in lowered position. The vats are supported by rollers 7 on rails 8, which are carried by the screw-spindles 1 and lowered or raised by the same. When any one of the vats-as, for instance, the third one from the right-hand side of Fig. 1-is lowered, it can be moved laterally by the rollers 7 on the rails 8 clear of the standards of the machine, after which when necessary the vat can be further transported by means of a movable crane or placed on a portable supporting-frame for repairs, &c.

In place of the mechanism for raising and lowering the screen-cylinder for moving the same sidewise out of the machine any other mechanism for accomplishing the same result may be used-as, for instance, eccentrics and toggle-levers, guide-rods, &c-while for the lateral removal of the vats in place of the rollers and rails special tracks may be used, which are placed below the vat, on which the same is lowered.

For replacing'the vat, with its screen-cylinder, accurately in its proper position and for supporting the same in this position during the runningof the machine inclined brackets 6 are employed, which project from the standards and against which inclined stops 9 at the upper ends of the vat abut. The lateral movement of the vats can also be readily accomplished in such cases, in which the screens are lowered within the vats and not with the same, as shown in the drawings.

The supply of pulp, the motion-transmitting mechanisms for the cylinders, &c., have to be so arranged and connected with the vats and screen-cylinders that the lowering and lateral removal ofthe vats and screencylinders can be accomplished without any difliculty in disconnecting the parts.

Having thus. described my invention, I claim as new and desire to secure by Letters Patent- 1. In a machine for making pasteboard provided with a plurality of screen-cylinders, the combination of the screen-cylinders,with mechanism for lowering or raising the same so that any one of the cylinders can be lowered below the pulp-carrying felt and raised up to the same, substantially as set forth.

2. In a machine for making pasteboard provided with a plurality of screen-cylinders, the combination, with the screen-cylinders and vats, of mechanism for lowering or raising the cylinders and vats, substantially as set' forth.

3. In a machine for making pasteboard provided with a plurality of screen-cylinders, the combination, with the screen-cylinders and vats, of means for lowering or raising the same, and means for moving them in lateral direction out of the machine, substantially as set forth.

4. In a machine for making pasteboard provided with a plurality of screen-cylinders, the combination, with the screen-cylinders and their vats, of means for lowering or raising the same, brackets on the supportingstandards of the machine, and stops on the vats for arresting the screen-cylinders and vats when in raised position, substantially as set forth.

5. In a machine for making pasteboard provided with a plurality of screen-cylinders, the combination, with the screen-cylinders and vats, of means for lowering and raising the same, rollers on the vats, and lateral guide-rails on the supporting-standards for moving the cylinders and vats laterally out of the machine, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in the presence of two subscribing witnesses.

PAUL PRIEM.

Witnesses:

ERNST ENTENNARD, EDWARD H. OZMUN. 

